Development of ZG35Cr26Ni12WNRE Heat Resistant Austenitic Steel
Author of the article:LIU Ruizhuo;ZHANG Ce;WANG Chengduo;WANG Guanghui;YANG Yang;SUN Yufu
Author's Workplace：School of Material Science and Engineering, Zhengzhou University, Zhengzhou 450001, China
Key Words：austenitic heat-resistant steel microstructure creep property
Abstract：
Based on the heat-resistant steel ZG35Cr26Ni8NRE for magnesium reduction pot, ZG35Cr26Ni 12WNRE heat-resistant austenitic steel was developed. The microstructure and creep properties of the newly developed heat-resistant steel were studied. The results show that the newly developed steel contains more carbon in the austenite matrix, and fewer large-sized (tens of microns) granular and worm-like carbide phases. Further, more ultrafine particle (about 1 micron) carbide phases will precipitate after it is treated at high temperature. The creep rate at second stage of the newly developed steel is 0.000 2%·h^-1 at 1 000 ℃ and 16 MPa, just 1/7 of the ZG35Cr26Ni8NRE steel. High temperature creep performance is greatly improved.
